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comparison mupdf-source/thirdparty/curl/src/tool_homedir.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22 #include "tool_setup.h"
23
24 #ifdef HAVE_PWD_H
25 # include <pwd.h>
26 #endif
27
28 #include "tool_homedir.h"
29
30 #include "memdebug.h" /* keep this as LAST include */
31
32 static char *GetEnv(const char *variable, char do_expand)
33 {
34 char *env = NULL;
35 #ifdef WIN32
36 char buf1[1024], buf2[1024];
37 DWORD rc;
38
39 /* Don't use getenv(); it doesn't find variable added after program was
40 * started. Don't accept truncated results (i.e. rc >= sizeof(buf1)). */
41
42 rc = GetEnvironmentVariableA(variable, buf1, sizeof(buf1));
43 if(rc > 0 && rc < sizeof(buf1)) {
44 env = buf1;
45 variable = buf1;
46 }
47 if(do_expand && strchr(variable, '%')) {
48 /* buf2 == variable if not expanded */
49 rc = ExpandEnvironmentStringsA(variable, buf2, sizeof(buf2));
50 if(rc > 0 && rc < sizeof(buf2) &&
51 !strchr(buf2, '%')) /* no vars still unexpanded */
52 env = buf2;
53 }
54 #else
55 (void)do_expand;
56 /* no length control */
57 env = getenv(variable);
58 #endif
59 return (env && env[0]) ? strdup(env) : NULL;
60 }
61
62 /* return the home directory of the current user as an allocated string */
63 char *homedir(void)
64 {
65 char *home;
66
67 home = GetEnv("CURL_HOME", FALSE);
68 if(home)
69 return home;
70
71 home = GetEnv("HOME", FALSE);
72 if(home)
73 return home;
74
75 #if defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
76 {
77 struct passwd *pw = getpwuid(geteuid());
78
79 if(pw) {
80 home = pw->pw_dir;
81 if(home && home[0])
82 home = strdup(home);
83 else
84 home = NULL;
85 }
86 }
87 #endif /* PWD-stuff */
88 #ifdef WIN32
89 home = GetEnv("APPDATA", TRUE);
90 if(!home)
91 home = GetEnv("%USERPROFILE%\\Application Data", TRUE); /* Normally only
92 on Win-2K/XP */
93 #endif /* WIN32 */
94 return home;
95 }